The familiar DTA Caterham of Allan & Dave Warburton has been getting faster and faster in recent weeks as the duo have got used to the new for 2013 Ford Duratec power.

Dave Warburton attacks East Brae at Doune (thanks to www.zipp.co.uk)

Despite currently running an intermediate-spec 2.3 litre Duratec powerplant in the car, rather than the full-house 2.5 litre lump which they had planned to be running this year, the car has demonstrated phenomenal grunt since it first appeared at Doune back in June.

‘The Big One’ at Shelsley Walsh this weekend looks like being an absolute cracker, and well worthy of it’s title. The entry list shows a great selection of all the usual front-runners, along with a number of familiar faces who haven’t been running for a while.